Enhancing visual working memory encoding: The role of target novelty

Perceptual salience improves the encoding of information into visual working memory (WM). However, the factors that contribute to this facilitation effect are not well understood. This study tested the influence of target familiarity on WM encoding. In each trial, participants were presented with either one or three targets and asked to encode their locations into WM. In Experiment 1, target familiarity was manipulated by presenting either an upright (familiar target) or upside-down (unfamiliar/novel target) A. Increasing the novelty of the targets led to improved performance in the spatial WM task. Experiment 2 showed that participants were faster in responding to novel versus familiar targets in a spatial detection task. Experiment 3 demonstrated that the beneficial effect of target novelty on WM encoding was not driven by differences in low-level features. Our results suggest that target novelty enhances the processes required for WM encoding, just as it facilitates perceptual processing.     

The hare and the snail: Dissociating visual orienting from conscious perception

A method for investigating attentional effects of peripheral visual objects, independently of perceptual identification, is described. We report an experiment using this method which shows that visual processing of peripheral objects differs radically, depending on whether participants move attention in response to an object or consciously perceive that object. When luminance contrast was reduced, conscious perceptual discrimination of peripheral letters was massively slower and less accurate—but both low and high contrast letters elicited rapid attentional orienting effects and these rapid orienting effects were equal in magnitude across low and high contrast. This pattern is consistent with known differences in luminance sensitivity between the dorsal and ventral visual processing streams, and with rapid dorsal–ventral interaction mediated via re-entrant feedback. Our findings show that the control system responsible for rapid movements of attention is exquisitely sensitive to visual form information at low levels of contrast, and involves a different neurocognitive pathway to that which gives rise to conscious perception.     

Media multitasking and implicit learning

Attention, Perception, & Psychophysics - Media multitasking refers to the simultaneous use of different forms of media. Previous research comparing heavy media multitaskers and light media...     

Parental involvement, child temperament, and parents' work hours: Differential relations for mothers and fathers

This study examined how child temperament was related to parents' time spent accessible to and interacting with their 2-year-olds. Bivariate analyses indicated that both fathers and mothers spent more time with temperamentally challenging children than easier children on workdays, but fathers spent less time with challenging children than easier children on non-workdays. After accounting for work hours, some associations between temperament and fathers' workday involvement dropped to non-significance. For fathers, work hours also moderated the relation between irregular temperament and workday play. For mothers, work hours moderated the relation between both difficult and irregular temperament and workday interaction. Mothers also spent more time with girls (but not boys) who were temperamentally irregular. Results speak to the influence of child temperament on parenting behavior, and the differential construction of parenting roles as a function of child characteristics and patterns of work.     

The development of temporal coordination in children

The ability to learn temporal patterns in sequenced actions was investigated in elementary-school age children. Temporal learning depends upon a process of integrating timing patterns with action sequences. Children ages 6-13 and young adults performed a serial response time task in which a response and a timing sequence were presented repeatedly in a phase-matched manner, allowing for integrative learning. The degree of integrative learning was measured as the slowing in performance that resulted when phase-shifting the sequences. Learning was similar for the children and adults on average but increased with age for the children. Executive function measured by Wisconsin Card Sorting Test (WCST) performance as well as a measure of response speed also improved with age. Finally, WCST performance and response speed predicted temporal learning. Taken together, the results indicate that temporal learning continues to develop in pre-adolescents and that maturing executive function or processing speed may play an important role in acquiring temporal patterns in sequenced actions and the development of this ability.     

Foreign Language Effect and Psychological Distance

Does using a foreign language result in forming different moral decisions than using our mother tongue? Two studies were conducted to investigate whether there is a relationship between foreign language effects (differences between native vs. foreign language conditions) and psychological distance. Study 1 tested four moral dilemmas adapted from Greene et al. (Cognition 107: 1144–1155, 2008). Non-fluent Korean–English bilingual participants (N = 161) indicated decisions regarding four moral dilemmas in either Korean or English languages. The study found that for personal moral conflict situations, in which emotion and automatic intuition were more important than deliberation, there were significant differences in ratios of utilitarian decisions between the native language (L1) and the foreign language (L2) conditions. The participants tended to make more utilitarian decisions in L2 than in L1, which implies reduced emotionality in L2. Study 2 examined whether the psychological distance increased using the foreign language (English) utilizing an automatic self-test. Nonproficient Korean–English bilinguals (N = 26) formed associations between three kinds of geometric shapes (ellipses, rectangles and triangles) and three kinds of labels (‘me’, ‘friends’ and ‘others’). The results of the study found the self-bias effect decreased when labels were presented in the foreign language (in English). This implies that the foreign language effect resulted from the reduced emotional response, and deliberation in decision making which may result from increased psychological distance.     

Design and development of next generation of information infrastructure: Case studies of broadband public network and digital city

A comparative case study is conducted on three digital city (public networks) projects. The focus of the study is on the processes involved in the development of such networks and the consequences of such networks. This study looks at (1) two broadband network projects in Central New York and (2) one digital city project in Korea. For the U.S. cases, this study discusses problems in the development of public network projects in Central New York. The two broadband projects were funded under a state program to diffuse broadband technologies in economically depressed areas of the state. The digital city project was sanctioned by the Seoul metropolitan government and is now being developed. This study investigates the initiation of the information infrastructure projects, their policy formulation processes, and the development of such projects. A new praxis of new information infrastructure is recommended. He earned his Ph.D. and Master in Information Science and Telecommunications from Syracuse University. He researches and consults on telecommunications management and policy. He also researches telecommunications and information infrastructure regulation. His interests expand to include evaluating the processes and impact of large technological projects and policy by using qualitative and quantitative case study methods.     

The procedural learning of action order is independent of temporal learning

How does learning the timing of actions influence our ability to learn the order of actions? A sequence of responses cued by spatial stimuli was learned in a serial reaction time task where the response-to-stimulus intervals (RSIs) were random, constant, or followed a fixed sequence. In this final sequenced-RSI condition, the response and RSI sequences were consistently matched in phase and could be integrated into a common sequence representation. The main result was that the response sequence was learned to a similar degree in all RSI training conditions, indicating that neither the predictability of RSIs nor the integration of the phase-matched response and timing sequences benefited learning of the response sequence. Nevertheless, temporal learning and integration speeded up performance without strengthening the representation of response order.     

An Antiseptic Religion: Discovering A Hybridity on the Flux of Hygiene and Christianity

An antiseptic religion is a form of Protestant Christianity that was shaped in the context of colonization in Korea. This term was coined to explain a religious hybrid that was produced by the intermingling of American Evangelical Protestant Christianity, the concept of hygiene (germ theory) and indigenous Korean religiosity. This research deals with a historical process of making ‘a medicalized religion’ in Asia from a perspective of postcolonialism. Most of the early American Protestant missionaries in Korea were medical doctors who were influenced by the Germ theory of illness and considered Western medicine as an efficient tool to evangelize the country. As a result of their mission, a religious culture which emphasized washing away sins from the soul as analogous to washing away germs from the body was born. In addition, the Korean people developed a very unique form of public bathing ritual centered in the development of public baths to alleviate anxiety and to destabilize the solid strategies of the Japanese and the Americans, the two major colonial powers in Korea’s history in the late 19th century.

Evaluation of pre-operative anxiety and propofol-induced sedation using newly proposed indices of finger vascular tone

Abstract: This study examined estimates of finger vascular tone, obtained from photoplethysmography. Normalized and double‐normalized pulse volume (NPV and DNPV), blood volume (BV), and pulse volume (PV) were obtained in 2 male and 7 female middle‐aged patients at an outpatient office 1–3 days before an operation and in the operating room before and after anesthesia by propofol. There was a preoperative decrease in NPV, and the propofol injection yielded a moderate increase in BV. The latter seemed to contribute to a decrease in DNPV. A partial correlation controlling for body mass index was observed between the change in NPV and the dose of propofol; a larger reduction in NPV before anesthesia compared with the control condition was accompanied by the need for a greater infusion of propofol for sedation. In conclusion, among the measures examined, NPV appears to be the best indicator of heightened arteriolar vascular tone.